High-Resolution Optical Investigations of Layered Materials with Net Polarization

具有净偏振的层状材料的高分辨率光学研究

• 批准号: 0106122
• 负责人: Cheng-Cher Huang
• 金额: $ 44万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-12-01 至 2006-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0106122&HistoricalAwards=false
• 关键词: Resolution; Optical; Investigations; Layered; Materials

This project is aimed at studying physical properties of various soft condensed materials such as chiral-smectic liquid-crystal and bent-core compounds that display a large net electric polarization. In addition to experimentally determining the molecular azimuthal arrangements in the chiral-smectic variant phases, studies of physical properties of various new mesophases formed by bent-core molecules will be emphasized. Employing state-of-the-art optical systems, numerous important discoveries in these areas are now possible such as the characterization of mesophases formed by bent-core molecules. These experimental results will focus on fundamental studies of molecular packing in the various mesophases and provide theorists important physical parameters for theoretical modeling. Educational opportunities will be developed to train both undergraduate and graduate students in designing and constructing cutting-edge optical systems as well as acquiring, analyzing and understanding high quality experimental data. The desire for high-speed liquid crystal displays and a new interest in special materials to be used in optic fiber networks makes the characterization of exotic liquid crystal phases for such applications has critically important. Students trained in these areas will be highly competitive in the job market.

本项目旨在研究各种软凝聚材料的物理性质，如手性近晶液晶和弯核化合物，显示出较大的净电极化。除了通过实验确定手性异构相中的分子方位角排列外，还将重点研究弯核分子形成的各种新中间相的物理性质。利用最先进的光学系统，这些领域的许多重要发现现在成为可能，例如由弯核分子形成的中间相的表征。这些实验结果将集中于各种中间相分子堆积的基础研究，并为理论建模提供重要的物理参数。将提供教育机会，培养本科生和研究生设计和建造尖端光学系统，以及获取、分析和理解高质量的实验数据。高速液晶显示的需求和对用于光纤网络的特殊材料的新兴趣使得对此类应用的特殊液晶相的表征具有至关重要的意义。在这些领域受过训练的学生将在就业市场上具有很强的竞争力。